Superfund sites ______________.
A. are mildly polluted
B. require no response at all
C. are so polluted, they require emergency federal response
D. are only found in rural areas
E. are only found in urban areas
Answer: C. are so polluted, they require emergency federal response
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What happens to the oxygen that is used in cellular respiration?
A. It is converted to carbon dioxide B. It is used to make glucose C. It is used to make Krebs cycle intermediates D. It is reduced to form water E. It is converted to acetyl-CoA
The type of cooperation between two species of a community that is based on satisfying the needs of both species is called
A. commensalism. B. mutualism. C. parasitism. D. predation.
Which statement describes a home heating and cooling system that functions in a homeostatic way?
A. The heater is on at a constant rate. B. The thermostat keeps the temperature within a narrow range. C. The temperature always stays the same. D. The heater never comes on.
The miRNAs in a cell
A) are found in prokaryotic cells. B) are a part of the prokaryotic ribosome. C) are a part of the eukaryotic ribosome. D) allow different cells to produce different proteins. E) are responsible for inducing operons.